Merge pull request #31430 from tensorflow/ggadde-cp2

cherrypick to fix the Linux CPU py2 pip builds

tensorflow/tools/ci_build/builds/pip_new.sh

@@ -452,6 +452,12 @@ install_tensorflow_pip() {
   #   ImportError: cannot import name py31compat
   ${PIP_BIN_PATH} install --upgrade setuptools==39.1.0 || \
     die "Error: setuptools install, upgrade FAILED"
+
+  # Install the future package in the virtualenv. Installing it in user system
+  # packages does not appear to port it over when creating a virtualenv.
+  #   ImportError: No module named builtins
+  ${PIP_BIN_PATH} install --upgrade "future>=0.17.1" || \
+    die "Error: future install, upgrade FAILED"
 }
 
 run_test_with_bazel() {